What is messing up the index page of my forum website??? 4 closing div tags?

Hi, I've been creating a forum website and had 2 forums up for testing purposes and I went to add a third and fourth last night and it threw the bottom part all out of wack.....

see here:
http://www.phone7forum.com/

Keep in mind that the forum website is built w/ php, and there are many included files..
-header
-index
-sidebar
-forumlist_body
-footer

The page that is throwing my index page off is the forumlist_body, the way the forumlist_body works is that it starts with and right underneath displays this code:

 

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